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y y RULER; i No. 370,668. l, Patented- 'Sepn 27,1881

INVENTOR TITORNEYS I WITNESSES f.

UNITED STATES PATENT OFFICE.

CHARLES H. WES'ICOTT, OF SENECA FALLS, NEW YORK.

RULER.

SPECIFICATION forming part of Letters Patent No. 370,668, datedSeptember 27, 1887.

Application filed January 27, 1887.

following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to letters or figures of reference marked thereon, which form a partof this specification.

Figure l of the drawings is a plan Viewr of my ruler, and Eig. 2 is a'transverse section of the same.

My invention relates to metalmounted wooden rulers; and it consistsintheconstruction and novel combination of parts, as here-- inafterdescribed, and pointed outin the claim.

Referring by letter to the accompanying. drawings, A designates the bodyof the ruler, which is made of wood, and is provided with a beveledstraight-edge, B, on which is delineated a scale which is divided intoinches and fractions of inches. The straight-edge B is kerfed in itsfront edge throughout its ent-ire length, as at C, and in this kerf C isseated and 'secured a metal straight-edge, D, preferably of brass,although any other desirable metal may be used. The body A of the ruleris kerfed longitudinally in its upper face parallel with the integralprojecting flange or rib E along its rear edge, and is provided with asecond longitudinal kerf, F, in the rear edge of the body A, immediatelybeneath the flange or rib E. In these kerfs C and F are seated andsecured the edges of the hollow metal or nearly tubular back G, whichnot only serves asa hand-piece by which to manipulate the Serial No.225,668. (No model.)

ruler, but also serves as a straight-edge for guiding the pen ininking-in pencil-lines and in drawing ink-lines primarily. Y

'The hollow metal back may be used when the ruler is in either thenormal or in the in` verted position. p

It will be seen that a ruler thus constructed is very simple, the partscan be readily put together, and the complete articles placed upon themarket at a minimum expense. It vwill also be seen that should thetubular portion become injured in any manner it may be slipped out ofthe grooves and replaced by another Without impairiug the usefulness ofthe other parts.

I am aware that it is not new to form aruler from sheet metal having oneof its edges formed into a cutting-edge and its opposite edge rolled.

Having described this invention, what I claim, and desire to secure byLetters Patent, 1s-

The combination, with the wooden body A, provided with the projectingflange or rib E along its rear edge, kerfed longitudinally in its upperface at H, and provided in its rear edge' with the longitudinal kerf E,parallelwith the kerf H, the hollow metal nearly tubular back G, havingits edges seated in the' CHARLES H. wEsroorr.

Witnesses:

JNO. J .i BABcook, C. W. BACHMAN.

